The use of heart rate variability (HRV) in research has been greatly popularized over the
past decades due to the ease and affordability of HRV collection, coupled with its clinical …

Healthy biological systems exhibit complex patterns of variability that can be described by
mathematical chaos. Heart rate variability (HRV) consists of changes in the time intervals …

Heart rate variability (HRV) is the fluctuation in time between successive heartbeats and is
defined by interbeat intervals. Researchers have shown that short-term (∼ 5-min) and long …

Background This paper suggests a method to assess the extent to which ultra-short Heart
Rate Variability (HRV) features (less than 5 min) can be considered as valid surrogates of …

Background: Despite the increasing demands of ultra-short-term heart rate (HR) variability
(HRV) for practical ambulatory applications, there have been few studies that have …

This paper presents an automatic ECG-based emotion recognition algorithm for human
emotion recognition. First, we adopt a musical induction method to induce participants' real …

Heart rate variability (HRV) analysis is commonly used as a quantitative marker depicting
the activity of autonomous nervous system (ANS) that may be related to mental stress. For …

Physiological signals have shown to be reliable indicators of stress in laboratory studies, yet
large-scale ambulatory validation is lacking. We present a large-scale cross-sectional study …

Abstract Background and Objectives: In spite of the existence of a multitude of techniques
that allow the estimation of stress from physiological indexes, its fine-grained assessment is …

Stress and mental health have become major concerns worldwide. Research has already
extensively investigated physiological signals as quantitative and continuous markers of …